Machine for developing dry-plates in daylight.



No. 839,120. PATENTED DEC. 25,: 1906.

W. S. DAVIS.

MACHINE FOR DEVELOPING DRY PLATES IN DAYLIGHT. APPLICATION IILIED AUG. 5, 190a.

Fly].

Inventor.

UNITED STATES PATENT oEEIoE.

WILLiAM s. DAVIS, or ORIENT, NEW YORK. MACHINE FOR DEVELOPING DRY-PLATES IN DAYLIGHT.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed August 6,1903. Serial No. 168,363.

To all whom, it may concern:

Be it known that 1, WILLIAM S. DAVIS, a citizen of the United States, residing at Orient, in the county of Sufiolk and State of New York, have invented a new and useful Machine for Developing Dry-Plates in Daylight, of which the following is a specification.

My invention relates to a veloping dry-plates in daylight, which consists of a light-tight box containing a compartment for the plate-holder, a catch for removing the plate from the same, a pivoted board to transfer the plate to the tray, and a tray for developing and fixing said plate, of which the accom anying drawings show the working, in whic Figure 1 is a sectional view of the entire machine; Fig. 2, a perspective view showing the machine in position for developing the plate, and Fig. 3 a portion in perspective of the holder-compartment from the inside of the box.

The plate-holder shown in the drawings is not a part of my invention and is shown only to illustrate the working of the machine.

Similar letters refer to similar parts throughout the several views.

Referring to Fig. 1, A is a door through which the plate-holder B is inserted. C represents stops extending around the inside of the box at right angles to the sides, forming a compartment to receive the plate-holder B, and against which stops the said holder is pressed by the springs D at the back of the box. E is a flat catch for releasing the dryplate from the holder, the body of the catch working in a slot in the bottom of the box close to the holder-compartment, the u per end of the catch being bent at a right ang e, as shown in Figs. 1 and 3, to permit of it engaging the spring-bar M of the holder, Fig. 3, which retains the dry-plate in the holder B. The body of the catch is bent in the form of a double curve, the u per end being curved in toward the face of the plate-holder, the lower end being curved in the opposite direction and passing through the slot in the bottom of the box to permit of working it from the outside of the apparatus. The outer end of the catch is bent at a right angle to permit of it lying flat against the bottom of the box when not in use. F is a flat transfer-board pivoted near the bottom of the box at one end close to the developing-tray H and provided on the face at the pivoted end with a lip or ledge to retain the plate in position,

machine for deate. box which is opened or removed to a Fig. 1. The transfer-board is operated from the outside of the box by a milled head Gr, connected with the pivot, the said board being used for transferring the released plate from the holder to the developing-tray. H is the developing-tray, having a flat bottom and square ends and provided at one end close to the bottonrwith a straight outlettube K, the form of tray and outlet-tube being shown in Fig. 1. I is the filling-funnel and tube. The form of funnel and tube and mode of attaching the same to the box is shown in Figs. 1 and 2, but may be varied as occasion may require without affecting the construction of the apparatus. J represents circular openings, one on each side of the box, containing ruby glass or other medium of a suitable non-actinic tint to permit the o erator watching the development of the L is a cover or door at the to of the flow the removal or insertion of the developing-tray and provided with an opening through which the outlet-tube K of the tray passes, as shown in Fig. 2.

Fig. 3 is a detail view in perspective, taken from the inside of the box, showing the plateholder compartment formed by stops 0 C C extending around the inside of the box or case. B is a section of the face of the plate holder. M is the spring-bar of the holder, by which the plate is held in the holder, and E is the catch, the claw on the upper end of which engages the spring-bar M and draws said bar down, and so releases the plate from the holder.

To operate the machine, the plate-holder B is inserted through the door A at the top of the box. When the holder is in plane, the slide of same nearest the catch is withdrawn, and the catch E is drawn out, at the same time moving it from right to left, as shown in dotted lines, (see Fig. 1,) which throws the claw at the upper end of the catch toward the holder and engages the spring-bar M in the holder, on which the plate rests, drawing said bar down and causing said plate to fall forward onto the pivoted transfer-board F, which is then turned upward by the milled head G until in the position shown in dotted lines in Fig. 1. The entire machine is then turned up on end, as shown in Fig. 2, which brings the tray H in a horizontal position for development and at the same time allows the plate to fall from the transfer-board F into the developing-tray H. The developer is then poured in through the funnel I and development watched through the ruby glasses J, of which there is one on each side of the machine. When development is completed, the solution is poured off through the outlet tube K, after which the plate is washed by pouring water on and Off in the same manner as the developer was introduced. After washing, the fixing solution is poured in and allowed to remain until the plate is fixed, when the tray containing the plate maybe re moved through the door or cover L.

Having described my invention, what I claim, and desire to secure by Letters Pat cut, is.

1. A daylight developing-machine for dryplates consisting of a box or case of oblong rectangular shape with two openings on the one at either end, provided with covers near one end a slot out at right angles to the sides ofcase, all substantially as described.

2. A daylight developingmachine for dryplates provided with a catch for releasing the 'plate from the holder, said catch being provided with a claw at the upper end within the case, and having the body ortion curved to a special shape to adapt it dr the purpose described, the lower enc. passing through a slot in the bottom of case in front of the plateholder, and adapted to be operated by means of the projecting lower end'under the case, all substantially as described.

3. A daylight developing-machine for dryplates having within the case a transferboard for plates pivoted close to the bottom of case, and provided with a milled head on the outside of case near the b0ttom, by means of which it is adapted to be turned upward, all substantially as described. ,v v

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM S. DAVIS.

Witnesses:

S. W. YOUNG, F. F. KING. 

